The club was created in 1924 following the merger between FC Union and FC Goldstar, two clubs from Sint-Truiden. The colors of the club were chosen to be yellow and blue, to match the colors of the city, and it was named Sint-Truidense Voetbal Vereeniging. The first game of the team, against Cercle Tongeren, was played in front of only 9 attendees. In the late 1930s, Léopold Appeltans was the leading player of Sint-Truidense. On November 21, 1948, he became the first capped player for Belgium while playing at this club. In the late 1940s it qualified for the second division. It also changed its name to Sint-Truidense Voetbalvereniging in 1947. Five years later it finished second in the second division and thus promoted to the first division. Successful manager Raymond Goethals arrived at Sint-Truiden in 1959. Under his management, the team finished second of the top division in 1966.